Generation of non-parental gene combinations in F2 generation is due to

Options

A. segregation
B. recombination
C. linkage
D. crossing over

Answer

To solve the question regarding the generation of non-parental gene combinations in the F2 generation, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the F2 Generation**:
- The F2 generation is the result of crossing two F1 individuals. In genetics, the F1 generation is the first filial generation, which comes from the parental generation (P).

2. **Concept of Gene Linkage**:
- Genes located on the same chromosome tend to be inherited together due to their physical association. This phenomenon is known as linkage. Linked genes do not assort independently during gamete formation.

3. **Non-parental Gene Combinations**:
- Non-parental gene combinations refer to new combinations of alleles that are different from those present in the parental generation. These combinations arise when genes that are linked undergo recombination.

4. **Recombination**:
- Recombination is the process through which linked genes can be separated during meiosis, leading to the formation of new allele combinations. This occurs through crossing over during prophase I of meiosis, where segments of homologous chromosomes exchange genetic material.

5. **Conclusion**:
- Therefore, the generation of non-parental gene combinations in the F2 generation is primarily due to recombination. This process allows for genetic variation and is a key mechanism in inheritance.

### Final Answer:
The generation of non-parental gene combinations in the F2 generation is due to **recombination**.

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